高精度卫星激光通信地面验证系统
发布时间：2018-11-20 06:58
【摘要】：为了在地面高精度评估激光通信终端对卫星平台扰动以及轨道姿态变化的适应能力,研究了卫星扰动模拟技术和卫星随动仿真模拟技术,据此提出了激光通信系统地面验证方案。首先开展了激光通信链路随动探测误差对系统随动性能影响分析、卫星扰振源特性分析及建模工作。其次,分析了卫星扰动模拟和随动模拟的关键技术及解决措施。最后,结合目前卫星激光通信及卫星平台技术水平,利用典型数据开展了扰动和随动仿真,完成了激光通信系统测试。实验结果证明:基于双反馈环路的高精度光束瞄准控制能够大幅提高卫星扰动模拟器光束瞄准的控制精度,光束控制精度优于0.1″;采用高低频联合卫星扰动模拟设计方法,实现了控制带宽优于1kHz的高精度光束控制;高精度随动系统在全卫星运行区域内对卫星光通信终端随动性能的检测精度可达0.1″。
[Abstract]:In order to evaluate the adaptability of laser communication terminal to satellite platform disturbance and orbit attitude change, satellite disturbance simulation technology and satellite tracking simulation technology are studied in order to evaluate the adaptability of laser communication terminal to satellite platform disturbance and orbit attitude change. Based on this, a ground verification scheme for laser communication system is proposed. Firstly, the influence of the detection error of laser communication link on the servo performance of the system is analyzed, and the characteristics of the satellite disturbance source are analyzed and modeled. Secondly, the key techniques and solutions of satellite disturbance simulation and follow-up simulation are analyzed. Finally, combined with the current technology level of satellite laser communication and satellite platform, the disturbance and follow simulation are carried out using typical data, and the laser communication system test is completed. The experimental results show that the high precision beam aiming control based on double feedback loop can greatly improve the control accuracy of the satellite disturbance simulator beam aiming, and the beam control accuracy is better than 0.1 "; The high precision beam control with better control bandwidth than 1kHz is realized by using the simulation design method of high and low frequency satellite disturbance, and the precision of detecting the tracking performance of satellite optical communication terminal in the whole satellite operation area is up to 0.1 ".
【作者单位】： 北京理工大学光电学院光电成像技术与系统教育部重点实验室;中国空间技术研究院北京空间飞行器总体设计部;
【基金】：高新二期卫星研发平台资助项目
【分类号】：TN927.2
本文编号：2344155
[Abstract]:In order to evaluate the adaptability of laser communication terminal to satellite platform disturbance and orbit attitude change, satellite disturbance simulation technology and satellite tracking simulation technology are studied in order to evaluate the adaptability of laser communication terminal to satellite platform disturbance and orbit attitude change. Based on this, a ground verification scheme for laser communication system is proposed. Firstly, the influence of the detection error of laser communication link on the servo performance of the system is analyzed, and the characteristics of the satellite disturbance source are analyzed and modeled. Secondly, the key techniques and solutions of satellite disturbance simulation and follow-up simulation are analyzed. Finally, combined with the current technology level of satellite laser communication and satellite platform, the disturbance and follow simulation are carried out using typical data, and the laser communication system test is completed. The experimental results show that the high precision beam aiming control based on double feedback loop can greatly improve the control accuracy of the satellite disturbance simulator beam aiming, and the beam control accuracy is better than 0.1 "; The high precision beam control with better control bandwidth than 1kHz is realized by using the simulation design method of high and low frequency satellite disturbance, and the precision of detecting the tracking performance of satellite optical communication terminal in the whole satellite operation area is up to 0.1 ".
【作者单位】： 北京理工大学光电学院光电成像技术与系统教育部重点实验室;中国空间技术研究院北京空间飞行器总体设计部;
【基金】：高新二期卫星研发平台资助项目
【分类号】：TN927.2
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